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The system was:
- two PTDX100 projectors fed out of Thunderbolt ports via apple MiniDP to VGA adaptors
- programming monitor out of another Thunderbolt port and sent to an Adderlink X200 KVM
- Decklink Intensity Extreme capturing HDMI into a further Thunderbolt port

thanks-
please email me pdf profile from catalyst- running this version
it contains the crash logs-

So i blew up my first Mac Pro. Literally killed it with 4 screens looping 4K video for 24 hrs. On to #2. One think that i am seeing now that i am using the star tech active adaptors is that the screens do not ID correctly in the Catalyst software. For example Screen 1 is mapped to screen 1, 2 to 2, 3 to 3, and 4 to 4. If i switch 2 & 3 in the catalyst software they both now want to work on screen 2 and i can't assign anything to screen 3. I have tried a new set of preferences with no luck. I would think with the way you have set this up you wanted to allow us to fix a bad screen assignment by an easy software swap.

So i blew up my first Mac Pro. Literally killed it with 4 screens looping 4K video for 24 hrs. On to #2. One think that i am seeing now that i am using the star tech active adaptors is that the screens do not ID correctly in the Catalyst software. For example Screen 1 is mapped to screen 1, 2 to 2, 3 to 3, and 4 to 4. If i switch 2 & 3 in the catalyst software they both now want to work on screen 2 and i can't assign anything to screen 3. I have tried a new set of preferences with no luck. I would think with the way you have set this up you wanted to allow us to fix a bad screen assignment by an easy software swap.

dont change screens assignment in catalyst - it doesn't work

all screen setup and assignment needs to be done without catalyst running-
as OS makes all sorts of hidden changes

all screen setup and assignment is done by OS - in whatever order it chooses - not me - i can't control any of this

And actually now that i had dumped my prefs and started fresh i can put screen 1 into full screen twice, screen 2 once, screen 3 once, and i can't go to full screen at all on screen 4. Unless of course i mess with those settings....